The above quote speaks about an individual's power to influence others, and how that is a significant mark of a leader. If a person has qualities that inspire others surrounding them to create change in their own lives, leadership qualities may be present. 

Being a good leader involves not pushing others to do more, but inspiring others to do more. Finding the line between pushing and inspiring may be tricky, but very important when seeking the most effective leadership in your company. A person that has the title of a leader but instead pushes others may be less effective than a person who may or may not hold a leadership title but inspires others every day.